In this country, conspiracy theorists are again debating whether Lee Harvey Oswald, acting alone, assassinated President John F. Kennedy. On Nov. 22, it will be a half-century since Kennedy was slain in Dallas.

As The Post reported Thursday, Democratic Senate candidate Maria Sachs has demanded an apology from her Republican opponent, Ellyn Bogdanoff, for a Republican Party mailer that accuses Sen. Sachs of voting against funding …